

348 

WWUS20 KWNS 232219

SEL6

SPC WW 232219

OKZ000-TXZ000-240500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 56

NWS STORM PREDICTION CENTER NORMAN OK

520 PM CDT MON MAR 23 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHWEST OKLAHOMA

       WESTERN NORTH TEXAS



EFFECTIVE THIS MONDAY AFTERNOON FROM 520 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF PONCA

CITY OKLAHOMA TO 30 MILES SOUTH SOUTHWEST OF FORT SILL OKLAHOMA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



OTHER WATCH INFORMATION...CONTINUE...WW 54...WW 55...



DISCUSSION...TCU/CBS ARE DEVELOPING SOUTHWESTWARD ALONG DRYLINE FROM

THE KS/OK BORDER TO JUST EAST OF CDS.  CONVECTION IS EXPECTED TO

CONTINUE TO INCREASE IN INTENSITY AND COVERAGE THROUGH THE EVENING

WITH A FEW SUPERCELLS POSSIBLE.  DAMAGING WINDS AND HAIL ARE THE

MAIN THREATS...BUT STRENGTH OF LOW LEVEL VERTICAL SHEAR ALSO WILL

SUPPORT A RISK OF TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

450. MEAN STORM MOTION VECTOR 24040.





...HART

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